Pipe-to-pipe friction welding of dissimilar Al-SS joints for cryogenic applications

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-02-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
12
1-12
Series
Journal of the Brazilian Society of Mechanical Sciences and Engineering, Volume 42, issue 96
Abstract
In the present investigation, dissimilar materials such as AA6063 and SS304L having pipe dimensions of 60.33 mm outer diameter and 3.9 mm wall thickness were friction-welded with different conditions of process parameters. Nondestructive tests such as radiography test (RT) and liquid penetration test (LPT) were carried out on the welded pipes in order to qualify weld joint. Thermal shock test and helium leak tests were performed on the successful welded samples in order to check its ability to work with cryogenic application. The results revealed that the pipe-to-pipe configuration of dissimilar Al–SS joints was produced successfully by friction welding using continuous drive. There were no defects presented in the joint area as revealed by RT and LPT. Thermal shock test and helium leak tests have also confirmed the soundness of joints. Higher deformation of Al base material results in the huge flash formation of Al that results in the sleeve formation of Al pipe on SS pipe. The helium leak test has confirmed the soundness of joints without any defects after its testing at 1.2 psi pressure. More than 60% of joint efficiency was obtained from Al–SS friction-welded joints.
Description
Keywords
Cryogenic dissimilar joints, Friction welding, SS to al joint, Thermal shock test
Other note
Citation
Vyas, H, Mehta, K, Badheka, V & Doshi, B 2020, ' Pipe-to-pipe friction welding of dissimilar Al-SS joints for cryogenic applications ', Journal of the Brazilian Society of Mechanical Sciences and Engineering, vol. 42, no. 2, 96, pp. 1-12 . https://doi.org/10.1007/s40430-020-2181-1